Infotel Systems - Richmond, Virginia : Installing & testing Digital Centrex Direct

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ISDN BRI Install & Test Checklist

Don't let the carrier tech leave until you have performed System Testing. Once they are gone, it could take days to fix the problem.

During ISDN BRI install, ask the ISDN technician these questions. If you experience problems with your BRI circuits, we can not help without this information.

BRI Install

Question for BRI installer	Correct answer to record
What are my SPIDS?	Verizon multi-line hunt group SPIDS must be of the format 11-xxxx-0001, 11-xxxx-0002, 11-xxxx-0003, 11-xxxx-0004, etc.
What are my (TN) telephone numbers ?	Two TN's per circuit unless ordering extra 20 TN block.
Is this BRI a single line BRI or a Centrex BRI?	Centrex
Do you need to dial 9 for an outside line?	Yes, you must dial 9 (on Verizon Centrex)
Did you have to install a repeater?	Record response and brand of repeater
Did you remove any bridge taps on the circuit. What taps remain ?	Record response
Did you remove any load coils on the circuit. What load coils remain ?	Record response
What was the measured db attenuation on each line?	-39db (loss from central office frame to premise) is the maximum attenuation allowed before requiring a repeater. We like to see -35 or less
Was each copper pair stress tested?	Just record answer. Unfortunately, this is not done often enough.
How long is the copper loop ? Did you have to remove load coils?	Record answer
How long did you run a BERT (Bit Error Rate Test) on each BRI circuit?	5 minutes min with zero errors. If errors, run for 15 minutes.
What was the results of the BERT test on each line?	Record results
Tech Name and pager number?	Record results

System Testing Setup

	In class 04.71 set display entries to 1,2 so that name and number will appear on the KTD.
	In class 25, route all telephone numbers to (a) non-attendant extension(s)
	Install a test phone next to the Adix with a button (COL) for each BRI channel. You should use FLOAT keys on your user extensions.

System Testing

TEST	WHAT CAN GO WRONG
Make two simultaneous calls out on each BRI circuit. If one of two SPIDS SPID	Sometimes, one of the two SPIDS does not initialize. In this case, the 2nd simultaneous call fails.
One the last BRI circuit, call a telephone number on this same circuit to make busy both channels on the last BRI busy. From your cell phone, call one of the TN's on this last BRI. The call should circular hunt to the first idle BRI circuit.	Failure is a busy signal. Verizon put terminal hunting on the multi-line hunt group(MLHG) Request circular hunt MLHG.
Caller ID inbound: Call into any TN to verify reception of Caller ID Name and Number.	Make sure that name and number is showing on KTD display
Caller ID Outbound: Make sure that the proper Caller ID name is generated to the called party.	Incorrect or no Name is generated to the called party.
Routing: Call into any TN.	Call should route according to class 25. If it does not, set 04.71 display settings to 1,4 to show Caller ID name and delivered DNIS number. DNIS should be 7 digits. RND calls deliver 10 digits.

Any SPID change in class 11 requires a reset of that BRI. This can be accomplished by a system reset. This will establish correct connections between Adix/NT1 and your ISDN BRI provider.